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Tom J. O’Donohoe,Lisa Mililli,Alison Magee,Christopher Thien,Yi Yuen Wang 대한척추신경외과학회 2020 Neurospine Vol.17 No.1
Objective: To determine the effect of anterior plating on postoperative dysphagia (POD) among adult patients undergoing elective anterior cervical discectomy and fusion (ACDF) for cervical spondylosis and determine the potential role of demographic and clinical characteristics in the development of POD. Methods: Consecutive adults undergoing an elective, single-level, ACDF were randomly assigned to receive a stand-alone CoRoent Cage or a CoRoent Cage with a Helix, or HelixMini plate. Patients with a history of cervical spine surgery were excluded. M. D. Anderson Dysphagia Inventory and Bazaz questionnaires were completed at regular intervals for 12 months postoperatively. Results: Twenty-five patients were recruited over a 2-year period, with 8 allocated to receive a stand-alone cage, 5 to receive a cage and Helix Mini plate, and 12 to receive a cage and Helix plate. The POD rate was 68% at 48 hours, before falling to 16% at 6 and 12 months. A longer retraction time was observed in the Helix plate group compared to the stand-alone cage group (7.88; 95% confidence interval, 0.12–15.63; p=0.046), although there was no difference in the incidence or severity of dysphagia between cohorts at any timepoint. With the exception of body mass index, there was no difference in patients with and without dysphagia, and each of the interventions was equally efficacious with respect to clinical and radiological endpoints. Conclusion: Dysphagia is a common consequence of ACDF and, while the placement of a large plate results in longer retraction time, it was not associated with higher rates of dysphagia. Further research is required to identify both patient-specific and surgical contributors to this complication.
Terence Tan,Tom J. Donohoe,Milly Shu-Jing Huang,Joost Rutges,Travis Marion,Joseph Mathew,Mark Fitzgerald,Jin Tee 대한척추외과학회 2020 Asian Spine Journal Vol.14 No.3
The aim of this systematic review was to evaluate the surgical, radiological, and functional outcomes of posterior-only versus combined anterior-posterior approaches in patients with traumatic thoracolumbar burst fractures. The ideal approach (anterior-only, posterior-only, or combined anterior-posterior) for the surgical management of thoracolumbar burst fracture remains controversial, with each approach having its advantages and disadvantages. A systematic review following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines was performed (registration no., CRD42018115120). The authors reviewed comparative studies evaluating posterior-only approach compared with combined anterior-posterior approaches with respect to clinical, surgical, radiographic, and functional outcome measures. Five retrospective cohort studies were included. Postoperative neurological deterioration was not reported in either group. Operative time, estimated blood loss, and postoperative length of stay were increased among patients in the combined anterior-posterior group in one study and equivalent between groups in another study. No significant difference was observed between the two approaches with regards to long-term postoperative Cobb angle (mean difference, −0.2; 95% confidence interval, −5.2 to 4.8; <i>p</i> =0.936). Moreover, no significant difference in functional patient outcomes was observed in the 36item Short-Form Health Survey, Visual Analog Scale, and return-to-work rates between the two groups. The available evidence does not indicate improved clinical, radiologic (including kyphotic deformity), and functional outcomes in the combined anterior-posterior and posterior-only approaches in the management of traumatic thoracolumbar burst fractures. Further studies are required to ascertain if a subset of patients will benefit from a combined anterior-posterior approach.
Michael Mackey,Laurena Holleran,Gary Donohoe,Declan P. McKernan 대한신경정신의학회 2022 PSYCHIATRY INVESTIGATION Vol.19 No.12
Objective Immune system dysregulation is hypothesised to be central to the aetiopathogenesis of schizophrenia; however, the role of sterile inflammation remains unclear. Damage associated molecular patterns are key initiators of sterile inflammation and are detectable in peripheral blood. Methods A defined systematic search of the Web of Science, PubMed, and Scopus was performed to identify adult case-control studies published between January 1990 and June 2022. Three studies consisting of 242 cases and 83 controls met inclusion for the systematic review and meta-analysis of HMGB1 while twenty-eight studies consisting of 1,544 cases and 1,248 healthy controls were included for S100B. Results A significant standardised mean difference in peripheral S100B and HMGB1 concentrations was detected between cases and controls. S100B subgroup analysis determined the largest significant effect size for unmedicated individuals diagnosed with schizophrenia. Conclusion This study provides evidence that peripheral S100B and HMGB1 concentrations are elevated in individuals diagnosed with schizophrenia when compared with healthy controls. These results should be interpreted with caution as significant heterogeneity was present during meta-analysis of S100B in the entire sample and in sub-group analysis. The persistence of significant heterogeneity throughout subgroup analysis indicates that the current diagnostic groupings may be a barrier to understanding human behaviours and emotions.
B. C. Choi,Y. K. Hong,J. Rudge,G. Donohoe,Q. F. Xiao 한국자기학회 2006 Journal of Magnetics Vol.11 No.2
The physical origin of complex dynamic domain configuration in nonequilibrium magnetic systems with mesoscopic length scales has been studied. An increasing complexity in the spatial feature of the evolution is found to accompany the increasing reversal speed, when a ferromagnetic element is driven by progressively faster switching fields applied antiparallel to the initial magnetization direction. As reversal rates approach the characteristic precession frequencies of spin fluctuations, the thermal energy can boost the magnetization into local configurations which are completely different from those experienced during quasistatic reversal. The sensitive dependence of the spatial pattern on switching speed can be understood in terms of a dynamic exchange interaction of thermally excited spins; the coherent modulation of the spins is strongly dependent on the rise time of switching pulses.